diff --git a/js/molarity/view/MolarityScreenView.js b/js/molarity/view/MolarityScreenView.js
index 91185aa4..c0f02671 100644
--- a/js/molarity/view/MolarityScreenView.js
+++ b/js/molarity/view/MolarityScreenView.js
@@ -257,7 +257,7 @@ define( require => {
     solutionControlsNode.accessibleOrder = [ soluteAmountSlider, solutionVolumeSlider ];
 
     // a11y - heading and accessible order for play area section of PDOM
-    this.playAreaNode.accessibleOrder = [
+    this.pdomPlayAreaNode.accessibleOrder = [
       beakerNode,
       solutionControlsNode,
       soluteComboBox,